So I've ordered some new wheels for my 02 150 FX4 and the wheels have a -12 offset. With the stock tires will I have to trim anything, if so what is the best way to do it and have it look nice?

 

If you don't have any lift or larger tire size you should be good. But if you have to trim anything use a dremel and take your time. Try to keep the curvature of the cut as close as you can to the original fender. I've got -24 offset and 35x12.50 toyo mts and I hardly had to trim anything.

 

You'll fit just fine